669674992 has 40 divisors (see below), whose sum is σ = 1547329536. Its totient is φ = 274524096.

The previous prime is 669674977. The next prime is 669675001. The reversal of 669674992 is 299476966.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127408 + ... + 132559.

Almost surely, 2^669674992 is an apocalyptic number.

It is an amenable number.

669674992 is an abundant number, since it is smaller than the sum of its proper divisors (877654544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669674992 is a wasteful number, since it uses less digits than its factorization.

669674992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260005 (or 259999 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 58.

The square root of 669674992 is about 25878.0793723182. The cubic root of 669674992 is about 874.8925003173.

The spelling of 669674992 in words is "six hundred sixty-nine million, six hundred seventy-four thousand, nine hundred ninety-two".